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Home > Performance Mods > Exhaust > Need some advice! *experienced tC owners*

Need some advice! *experienced tC owners*

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Sean_Maxwell
Pennsylvania, US
  • Window Washer
 Hey guys,

I just had a header, down-pipe, megan mid-pipe, and HKS Hi-Power exhaust system installed on my 05 automatic tC. Basically, when giving the car any gas on this setup, it sounded like a jet engine taking off. It was way too loud for comfort and the rasp was beyond horrible.

So I reinstalled the stock axle back muffler on the car and it's quiet again. However, it is making a tinny rattling noise when I give it a little gas now. I don't think the stock axle back can handle this much flow.

* I believe the HKS was just getting so much air that it was getting amplified (at the muffler) beyond comfort to basically any driver. If I left it on, I would have been pulled over by the police I'm sure...

Can any experienced users tell me an axle back that I could get that just gives me a decent little hum? In other words, probably one of, if not the, quietest axle back money can buy.

Thanks,
Sean

[#] May 10, 2008 10:13am
Sean_Maxwell
Pennsylvania, US
  • Window Washer
 By the way, I was looking at the TRD axle back because it looks essentially like the stock exhaust. I know it sounds deeper, but would it just be over-kill too if i linked it up to my current rig. I really don't want to keep the HKS because of the angle and size. I want something that looks more OEM.

[#] May 10, 2008 10:21am
Mayo
Rockville
Maryland, US
  • The Guru
 Hmm, so I dont think the problem is how much flow the stock axleback can handle. If it can handle a supercharger, a new header is no problem, haha.

As long as you have that header on, you should get a resonator welded in to your midpipe. That would be the best way to quiet it down and still use any muffler you like.

If thats not an option, try a Tanabe MT exhaust. Vicious has one and he says his exhaust is pretty quiet, even with a header. See if maybe he can give you more info!


"gonna wash my car before i take a nap.. can't rest well knowing i've got the entire cast of A Bug's Life on my bumper" - Vicious
-- Want to post a "For Sale" thread? Check out the rules first.
[#] May 10, 2008 10:24am
Mayo
Rockville
Maryland, US
  • The Guru
Sean_Maxwell wrote:
By the way, I was looking at the TRD axle back because it looks essentially like the stock exhaust.


Ahhh! Dont get TRD with an aftermarket header! Haha, it sounds like a hive of bees trapt in a can.


"gonna wash my car before i take a nap.. can't rest well knowing i've got the entire cast of A Bug's Life on my bumper" - Vicious
-- Want to post a "For Sale" thread? Check out the rules first.
[#] May 10, 2008 10:26am
Sean_Maxwell
Pennsylvania, US
  • Window Washer
Mayo wrote:
Sean_Maxwell wrote:
By the way, I was looking at the TRD axle back because it looks essentially like the stock exhaust.


Ahhh! Dont get TRD with an aftermarket header! Haha, it sounds like a hive of bees trapt in a can.


Thank you for the feedback... I'll keep that in mind. I may try the Tanabe MT because if I remember correctly it has a stock shape. If that fails me, could anyone link me to best bang for buck resonator that links well with the Megan mid-pipe?

Thanks again,
Sean

[#] May 10, 2008 10:50am
Kurisutaira
  • Godlike Advisor
 i think this is the Tanabe MT
if so then ill just say personally i dont like it...coz that looked like stock header, wich wuld lead me to think all of it was stock except the MT and even that alone was resonating



"This is what happens when an unstoppable force meets an unmovable object"
[#] May 10, 2008 11:16am
Web
Maryland, US
  • THE SHADOW
 If you get a header, you need to get another resonator. That's just a fact of our engine and exhaust system. B/c the header removes the primary CAT and the secondary is simply a high flow, it doesn't slow the exhaust flow enough and by the time it hits the stock midpipe resonator, it's still ricocheting off the exhaust piping. You need to add another resonator prior to the axle back or you'll still have rasp at high rpms.


Complaining is futile when you supported the victory.
http://clubsciontc.com/fo...-rims--5x100-pattern.html
[#] May 10, 2008 11:36am
Web
Maryland, US
  • THE SHADOW
Kurisutaira wrote:
i think this is the Tanabe MT
if so then ill just say personally i dont like it...coz that looked like stock header, wich wuld lead me to think all of it was stock except the MT and even that alone was resonating



That is the stock header. Our aftermarket available header manufacturers do not make it possible to reuse the stock heat shield. That's just a clip of an axleback on a stock exhaust system. At the base of the shield, you can see the buldge of the primary CAT.


Complaining is futile when you supported the victory.
http://clubsciontc.com/fo...-rims--5x100-pattern.html
[#] May 10, 2008 11:38am
vastano1
New Hyde Park
New York, US
  • Godlike Advisor
 http://www.clubsciontc.co...d=17593&page=1#227072

check that thread

click the link, donate some money to help improve our site/community

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[#] May 10, 2008 11:39am
Kurisutaira
  • Godlike Advisor
 oops i meant that it was raspy, not resonating *BRAIN FART*


"This is what happens when an unstoppable force meets an unmovable object"
[#] May 10, 2008 11:41am
Paulz0r
Naperville
Illinois, US
  • Tech Advisor
 95% of the problem is going to come from the midpipe. i would add like 2 24inch resonators and it should sound pretty good.

the axle back isn't your problem, so save yourself some money and just get a few resonators.

[#] May 10, 2008 01:32pm
Sean_Maxwell
Pennsylvania, US
  • Window Washer
 Thanks everyone for the help... talked to a mechanic and he said the cheapest most cost effective solution would be to sell my megan mid pipe.. so if anyone is interested.. i'll be selling it at a discounted rate.. only been used for a couple days..

$150 + s/h of choice (I payed $225 shipped)

I have the original box so I will ship anywhere in the US

[#] May 10, 2008 01:41pm
blue
Miami
Florida, US
  • Detailer
 your mechanic lead you wrong becuase i had the stock midpipe for a while and it still sounded raspy. even on the stock one you have to add a resonator. you best bet is to keep the megan midpipe and add one or two resonators at any muffler shop and that would take care of the problem

[#] May 10, 2008 01:54pm
Paulz0r
Naperville
Illinois, US
  • Tech Advisor
 ^^^ you are correct in some aspect.... but the most "COST EFFECTIVE" way is just to sell his megan for 150, and get a custom midpipe made with 2 resonators which will cost like 100-125 depending on where you go.

[#] May 10, 2008 02:25pm

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